CVE-2025-68312
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
16/12/2025
Última modificación:
16/12/2025
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
usbnet: Prevents free active kevent<br />
<br />
The root cause of this issue are:<br />
1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);<br />
put the kevent work in global workqueue. However, the kevent has not yet<br />
been scheduled when the usbnet device is unregistered. Therefore, executing<br />
free_netdev() results in the "free active object (kevent)" error reported<br />
here.<br />
<br />
2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),<br />
if the usbnet device is up, ndo_stop() is executed to cancel the kevent.<br />
However, because the device is not up, ndo_stop() is not executed.<br />
<br />
The solution to this problem is to cancel the kevent before executing<br />
free_netdev().
Impacto
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e
- https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84
- https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d
- https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de
- https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b
- https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc
- https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915
- https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565



